6625564247 has 2 divisors, whose sum is σ = 6625564248. Its totient is φ = 6625564246.

The previous prime is 6625564243. The next prime is 6625564321. The reversal of 6625564247 is 7424655266.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6625564247 - 2² = 6625564243 is a prime.

It is a super-2 number, since 2×6625564247² = 87796203182249354018, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6625564243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3312782123 + 3312782124.

It is an arithmetic number, because the mean of its divisors is an integer number (3312782124).

Almost surely, 2^6625564247 is an apocalyptic number.

6625564247 is a deficient number, since it is larger than the sum of its proper divisors (1).

6625564247 is an equidigital number, since it uses as much as digits as its factorization.

6625564247 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2419200, while the sum is 47.

The square root of 6625564247 is about 81397.5690484673. The cubic root of 6625564247 is about 1878.1961956715.

The spelling of 6625564247 in words is "six billion, six hundred twenty-five million, five hundred sixty-four thousand, two hundred forty-seven".